prawnsalad · April 30, 2020 15:14 · Apr 30, 2020
diff --git a/floodnet.js b/floodnet.js
@@ -0,0 +1,68 @@
+const WebSocket = require('ws');
+
+function sleep(ms) {
+    return new Promise(r => setTimeout(r, ms));
+}
+
+function rand(min, max) {
+    return Math.floor(Math.random() * (max - min + 1) + min);
+}
+
+let nextMsgId = 1;
+
+async function handleSocket(socket) {
+    let nick = 'nick' + nextMsgId++;
+    let mask = nick + '!' + nick + '@host.net';
+
+    let w = (line) => {
+        let d = (new Date()).toISOString();
+        let out = line
+            .replace('$nick', nick)
+            .replace('$mask', mask);
+
+        out = `@msgid=${nextMsgId++};time=${d}; ${out}`;
+        socket.send(out);
+    }
+
+    let joinChannel = async (chan) => {
+        let users = [];
+        w(`:$mask JOIN ${chan}`);
+
+        while(true) {
+            await sleep(rand(100, 700));
+
+            // 25% chance of joining a user
+            if (users.length < 1000 && rand(1, 100) < 25) {
+                let newNick = 'user' + nextMsgId++;
+                users.push(newNick);
+                w(`:${newNick}!${newNick}@host.net JOIN ${chan}`);
+            }
+
+            // 2% chance of parting a user
+            if (users.length > 3 && rand(1, 100) < 2) {
+                let idx = rand(0, users.length-1);
+                let partedUser = users.splice(idx, 1);
+                w(`:${partedUser}!${partedUser}@host.net PART ${chan}`);
+            }
+
+            let from = users[rand(0, users.length-1)];
+            w(`:${from}!${from}@host.net PRIVMSG ${chan} :some message`);
+        }
+    };
+
+    await sleep(1000);
+    w(':srv.net 001 $nick :Welcome to the flood net');
+    w(':srv.net 005 $nick ACCEPT=30 AWAYLEN=200 CALLERID=g CASEMAPPING=ascii CHANLIMIT=#:20 CHANMODES=Zbegw,k,FHJdfjl,BCDMNOPRScimnprstuz CHANNELLEN=64 CHANTYPES=# ELIST=CMNTU ESILENCE=CcdiNnPpTtx EXCEPTS=e EXTBAN=,BCNORSUacjmrsz :are supported by this server');
+    w(':srv.net 005 $nick EXTJWT=1 HOSTLEN=64 KEYLEN=32 KICKLEN=255 LINELEN=512 MAXLIST=begw:100 MAXTARGETS=20 MODES=20 MONITOR=30 NAMESX NETWORK=floodnet NICKLEN=30 :are supported by this server');
+    w(':srv.net 375 $nick :srv.net of the day');
+    w(':srv.net 372 $nick :the motd');
+    w(':srv.net 376 $nick :End of message of the day');
+
+    joinChannel('#chan1');
+    joinChannel('#chan2');
+    joinChannel('#chan3');
+}
+
+const server = new WebSocket.Server({ port: 10666 });
+server.on('connection', handleSocket);
+